Methane —› Carbon Dioxide
Oxidation of Methane to Carbon Dioxide (Gas Phase)
4H2O2 (g) + CH4 (g) —› CO2 (g) + 6H2O (g)
Hydrogen Peroxide
Methane
Carbon Dioxide
Water (Humidity)
A chemical reaction is, basically, a reorganization of atoms and their electrons. If molecules can react to create a less
energetic set of products, atoms will donate, accept, or share electrons to rearrange to a more stable configuration.
Dry Hydrogen Peroxide (DHP) is an anhydrous gas that converts formaldehyde and other Volatile Organic Hydrocarbons
(VOCs) to Carbon Dioxide and humidity. The reaction takes place in the gas phase without need of acidic solutions.
All eight reaction steps proceed rapidly with no build-up of intermediate species.
STEP 1
CH4 + HO•
—›
CH3• + HO•
—›
CH3OH
CH3OH + HO•
—›
CH3O• + H2O
CH3O• + HO•
—›
CH2O + H2O
H2O2 + CH2O
CHO• + H2O + HO•
—›Formaldehyde
Radical Water (Humidity) Hydroxyl Radical
CHO• + HO•
—›
Methane
Hydroxyl Radical
CH3• + H2O
Methyl Radical
Water (Humidity)
STEP 2
Methyl Radical
Hydroxyl Radical
Methanol
STEP 3
Methanol
Hydroxyl Radical
Methanol Radical
Water (Humidity)
STEP 4
Methanol Radical
Hydroxyl Radical
Formaldehyde
Water (Humidity)
STEP 5
Hydrogen Peroxide
Formaldehyde
STEP 6
Formaldehyde Radical
Hydroxyl Radical
CH2O2
Formic Acid
STEP 7
H2O2 + CH2O2
+ H2O + HO•
—› CHOO•
Formate Radical
Water (Humidity) Hydroxyl Radical
CHOO• + HO•
—›
2nd Hydrogen Peroxide
Formic Acid
STEP 8
Formate Radical
Hydroxyl Radical
CO2 + H2O
Carbon Dioxide
Water (Humidity)
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